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G. HUBBARD.

Automatic Liquid Gage.

Patented Oct. 9, 1860.

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UNITED STATES PATENT OFFICE.

GILBERT HUBBARD, ()F MONTVILLE, MASSACHUSETTS.

MEASURING-FAUOET.

Specification of Letters Patent No. 30,321, dated October 9, 1860.

To all whom it may concern:

Be it known that I, GILBERT HUBBARD, of Montville, in the county of Berkshire and State of h Iassachusetts, have invented a new and Improved Automatic Liquid-Measuring Gage; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in whiclr- Figure 1 is a front view of the improved liquid measuring gage. Fig. 2 is a longitudinal vertical section taken through the gage showing the interior of the gage and clock work and valves. Fig. 3 is a transverse vertical section taken through the measuring cylinder showing the arrangement of valves and floating piston therein. Fig. at is a view of the ratchet cam and valve rod, and pawl.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists, firstly, in operating a plunger or piston placed within a cylinder communicating with the vessel from which liquid is to be drawn and measured, in such a manner that it will actuate certain valves and a train of wheel work and measure the liquid as it passes from the barrel into and from the cylinder as will be hereinafter described and represented.

Secondly, it consists in combining certain mechanism with the plunger for operating the valves and registering the measured quantity or for registering the quantity to be measured as will be hereinafter described.

To enable those skilled in the art to fully understand my invention I will proceed to describe its construction and operation.

In the drawing A is a cylinder with a conical bottom piece A. The cylinder may be of any desirable capacity from a quart upward, and it should be furnished on top with a suitable cap or cover.

B is a pipe that leads from the barrel, or vessel from which liquid is to be drawn and measured, to the cylinder A as shown in Fig. 2. This pipe communicates with the measuring chamber A of the cylinder, and its orifice is closed by a valve (4. The partition b separates the bottom from the top chambers of the cylinder, and this partition has two escape valve orifices c, c, on each side of the inlet orifice from which the liquid flows after being measured in the cylinder A. The lower portion A is thus simply a funnel for keeping the bottom of and to concentrate the stream in to one channel. The two escape orifices c c are closed by valives c 0 shown in Fig. 3 which play loosely on rods, (Z, (Z, that are connected to the stem of valve a. Thus when the valve a is raised and forced up against its seat so as to shut off the flow of liquid in to the cylinder A, the valves 0 c are also raised, and open the orifices c, c for the escape of liquid from the cylinder; and when the two valves 0, c are shut the middle valve a opens. These valves are operated by a bent lifting bar (I and valve rod C shown in Figs. 2 and 4 as will be hereinafter described.

D is a floating piston that works up and down in cylinder A. It is made buoyant by pieces of cork or other light substance secured in the piston which is cup shaped. This piston is made buoyant so that it will rise and fall with the liquid as it passes into and escapes from the cylinder.

D is the piston rod that projects up to the top of the cylinder and is kept steady and in an upright position by a forked rod E that projects over the top of the cylinder A.

F is an inclined plate that is attached to the top. of the piston as shown in Figs. 2 and 3 which acts upon a set screw that passes through the end of bent lever pawl G when the piston is raised as shown in red lines Fig. 3, and releases a ratchet wheel H Figs. 2 and 4.

I is a forked pawl lever that engages with ratchet wheel H. Said ratchet wheel has two teeth diametrically opposite each other one of which pawl G engages with and the other tooth pawl, I, engages with. The valve rod C is pivoted eccentrically to the ratchet wheel H and by the revolutions of this wheel the valves are raised and depressed.

The pipe B now being applied to a reservoir of liquid and the valve a opened the liquid will flow up into the cylinder A and raise the piston D, until the inclined cam plate F strikes the pawl Gr when the ratchet wheel H which is acted upon by a the vessel clear spring, as will be hereinafter described,

the bottom of the cylinder it will draw down the lever pawl I and release the ratchet wheel H when this wheel will make another half turn and close. the discharge orifices and open the orifice communicating with the main reservoir. The .liquid will again flow up into the cylinder to again till it and be discharged as before.

The ratchet wheel H is keyed to a short pinion wheel shaft 9 that has its bearings in a box J which attached to the outside of the cylinder A. The pinion on shaft 9 engages with the teeth of a spur wheel h which is clutched to its shaft by a ratchet wheel and pawl, similar to a clock wheel. coiled spring 70 acts upon the wheel h when the spring is wound up by an index hand, L, that is keyed to the shaft of wheel 71..

M is a cam gage wheel with four notches cut in its lower edge and two teeth 2', 2', proj ecting from its upper edge. This wheel is pivoted to the face plate of box J and acted upon by the index hand L at each revolution of this hand.

j is a stop pin that prevents the wheel M from turning more than one quarter around or the distance of its four notches, stopping it when the tooth 2" strikes it, the pin 7'. The circle described by the point of the index hand L, may be marked off on the face plate into fractions of a pint or quart measure.

In describing the operation of this measuring gage the cylinder A is supposed to measure one fourth of a quart or half pint, corresponding to four turns of the index hand L, and as there are four notches in the gage wheel M the ma chine will measure four quarts before stopping.

It will. be seen that the parts may be made to measure by gills, quarts or gallons by varying their relative proportions.

It has been shown that the liquid will flow into the cylinder until the cylinder is full when the flow will stop, until the contents of the cylinder are discharged and then go on again; and this filling and discharging of the cylinder will take place as long as the wheel work in box J is kept wound up, but in order to have the flow of liquid stop at any determined quantity within the capacity of the gage the gage wheel M is used which may be turned bythe hand and set so as to stop the mechanism when the desired quantity has been measured, the spring k being kept moved up all the time by turning the index hand around backward. A nut 01. is screwed on the top of the piston rod for adjusting the length of the rod so as to regulate the movement of the parts to a nicety.

The parts hereinabove described may all be inclosed in such a manner that they will not be affected by dirt, flies, &c.

Having thus described my invention what I claim as new and desire to secure by Let ters Patent, is

1. The piston and piston rod D inlet and discharge valve orifices with their valves 0., 0, 0 arranged as described, in combination with the rods C and C wheel H, and pawls G, I, operated-alternately by the rising and falling of the piston, the whole being arranged relatively with each other and operating substantially in the manner herein set forth.

2. The wheel M with its notches, and teeth 71, 2' and stop pin j, in combination with the index registering hand L, spring 70, wheel h, pinion and shaft g, and ratchet wheel H arranged substantially in the manner and for the purposes herein set forth.

GILBERT HUBBARD.

Witnesses:

W. C. LANGDON, I C. LANcDoN. 

